AIFF 转 M4A
把 AIFF 母带编码成 M4A，得到一份体积小巧、在任何苹果设备上都好听的副本。
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To
AIFF
Apple's uncompressed audio format, the Mac counterpart to WAV. Full quality, large files, used in music production.
M4A
The AAC audio container used by Apple Music and iTunes. Better quality than MP3 at the same size.